Long Island banana mogul Thomas Hoey Jr. pleaded guilty Thursday to supplying cocaine that killed a woman during a wild three-way sex romp at a Park Avenue hotel in 2009 with him and another gal.

The hard-partying Hoey, 46, admitted in Manhattan federal court that he delayed getting emergency assistance for the late Kimberly Calo after she went into convulsions while sniffing his potent coke in April 2009 — as he first tried to clean up the bloody, drug-filled crime scene at his $700-a-night suite at The Kitano.

Thomas Hoey Jr. in 2009Photo: Victor Alcorn

Apparently, Hoey didn’t learn his lesson. He confessed to Manhattan federal Judge Kevin Castel that he continued to fuel wild drug parties even after she died — supplying between 3.5 and 5 kilograms of coke to sex partners and other pals between 2005 and 2010.

“It was for social use — not in exchange for money” — for drug parties “mostly in Manhattan and Long Island,” the balding banana king said.

Hoey, owner of the Long Island Banana Corp., also admitted forcing the other gal involved in the three-way hotel orgy, ex-mistress Nicole Zobkiw, to lie to a grand jury about his role in the 41-year-old Calo’s death. Zobkiw was convicted for lying to a grand jury last year but has yet to be sentenced.

Hoey’s current girlfriend, Alison Bretherick, who was not involved in the drug case, was on hand to show her support — even after a Manhattan Supreme Court jury in May 2013 found him guilty of beating her bloody.

The blond beauty — who has denied being assaulted — teared up during the hearing but also exchanged smiles and affectionate hand gestures with her lover. Dressed in a tight blue dress and black high heels, the well-manicured “Banana Queen” declined comment afterward.

Hoey pleaded guilty to conspiracy to distribute cocaine, aiding in perjury conspiracy and obstruction of justice.

He faced up to 20 years in prison if the case went to trial, but now faces about nine to 11 years in jail under his plea deal when he’s sentenced Dec. 15.

However, that agreement with the feds calls for it being upped to about 11 to 13 years in jail should Hoey get more than two months’ prison time in the separate state case — which is likely — for beating up Bretherick and other charges.

The other state charges include felony tampering for trying to clean up Calo’s bloodstains before cops arrived. Hoey faces up to four years of prison in that case, in which he’s scheduled to be sentenced next week.

Hoey’s lawyer Ronald Fischetti declined comment afterward, but prior to the hearing was overheard telling Bretherick and the defendant’s family that Hoey “looked well” before the banana mogul was escorted into the courtroom by federal marshals. Hoey remained in custody following the hearing.

During Zobkiw’s 2013 trial, retired NYPD Detective Edward Boyle, who investigated Calo’s death, testified that Hoey used a business card to give Calo the high-quality coke. After having sex with Zobkiw, Hoey went at it with Calo, who helped herself to blow on a coffee table, Boyle said Zobkiw told him.

After snorting more, Calo began convulsing and “her head dropped to the table with a thud,” Boyle told jurors.